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Resilience4j is a lightweight, easy-to-use fault tolerance library designed for Java8 and functional programming

There is a newer version: 2.2.0

/*
 * Copyright 2019 Kyuhyen Hwang
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package io.github.resilience4j.fallback;

import io.reactivex.*;
import io.vavr.CheckedFunction0;

import java.util.Set;
import java.util.function.Function;

import static io.github.resilience4j.utils.AspectUtil.newHashSet;

/**
 * fallbackMethod decorator for {@link ObservableSource}, {@link SingleSource}, {@link
 * CompletableSource}, {@link MaybeSource} and {@link Flowable}.
 */
public class RxJava2FallbackDecorator implements FallbackDecorator {

    private static final Set> RX_SUPPORTED_TYPES = newHashSet(ObservableSource.class,
        SingleSource.class, CompletableSource.class, MaybeSource.class, Flowable.class);

    @Override
    public boolean supports(Class target) {
        return RX_SUPPORTED_TYPES.stream().anyMatch(it -> it.isAssignableFrom(target));
    }

    @Override
    public CheckedFunction0